Best Aerospace, Maritime and Defense Tech Companies in Harju County, Estonia
The 41 best Aerospace, Maritime and Defense Tech companies in Harju County, Estonia in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Wayren.
Our analysis of 50 Aerospace, Maritime and Defense Tech companies
$31.9b in tracked funding; 90% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2021.
Ranked: Best Aerospace, Maritime and Defense Tech companies in Harju County
| # | Company | Revenue | Disclosed funding | Employees | Founded | Founder | Tech stack | Recent signals |
|---|---|---|---|---|---|---|---|---|
| 1 | DefSecIntel Provider of AI-based border and coastal security systems | $33M FY2023 | $744K | — | 2018 | Jaanus Tamm President and CEO | Wix eCommerceWixSentry+19 | 1 launch |
| 2 | Threod Systems Develops drones for military and commercial applications and provides associated training and consulting… | $22M FY2023 | $111K | 32 | 2012 | — | WordPressMySQLPHP+13 | — |
| 3 | Droon.ee Online retailer for imaging devices & its accessories | $22M FY2023 | — | 10 | 2013 | — | WordPress Block EditorWordPressMySQL+31 | — |
| 4 | SILLE Provider of a SaaS and satellite-based infrastructure deformation monitoring system | $13M FY2022 | — | 79 | 2018 | — | — | — |
| 5 | Defendec Wireless sensors & surveillance system for border and remote areas | $5M FY2022 | $2M | 16 | 2006 | Jaanus Tamm Co-Founder and Member of Supervisory Board | Cart FunctionalityWixSentry+15 | — |
| 6 | Shipping management software Shipping management software for maritime logistics | $693K FY2023 | — | 6 | 2005 | — | — | — |
| 7 | Qstep Cloud-based air cargo handling software | $656K FY2023 | — | 4 | 2014 | — | — | — |
| 8 | Zubax Robotics Manufactures flight controller chips and navigation modules for drones | $636K FY2023 | — | 5 | 2014 | Pavel Kirienko CEO & CTO | Cart FunctionalityShopifyAmazon Web Services+25 | — |
| 9 | Ostax Provider of e-commerce platform for drone accessories | $612K FY2023 | — | 1 | 2016 | — | — | — |
| 10 | Hepta Provides aerial inspection and surveying services | $523K FY2022 | $338K | — | 2017 | Siim Maripuu Co-Founder | — | — |
| 11 | Hepta Insights Provider of smart power line inspection solutions | $372K FY2022 | $3M | 7 | 2013 | Siim Heering Co-Founder | — | — |
| 12 | KrattWorks Provider of an autonomous surveillance system for combatting landscape fires | $269K FY2022 | — | 18 18 → 13 (-28%) | 2019 | Mattias Luha Founder | Cart FunctionalityWixSentry+18 | — |
| 13 | Marduk Technologies Developer of electro-optical systems for drone | $115K FY2022 | $184K | 18 18 → 23 (+28%) | 2016 | Toomas Pruuden CEO | Tailwind CSSReactReact Router+7 | 1 job opening · 1 award |
| 14 | Cafa Tech Develops flight planning software for drones | $100K FY2022 | $2M | 37 37 → 24 (-35%) | 2015 | Tanel Jarvet CEO | WordPressMySQLPHP+19 | — |
Top 12 Aerospace, Maritime and Defense Tech companies in Harju County
#1
Series A · Tallinn, Harju County · founded 2020 · 4 employees$9Mraised▾
Provider of communication platform for military. Company develops communication platforms for military applications and improving situational awareness and operational efficiency for defense forces. The company provides solutions that facilitate communication and data exchange in maritime environments.
- Apr 2025Series A$9M
#2
Seed · Tallinn, Harju County · founded 2023$6.4Mraised▾
Developer of autonomous drone navigation systems independent of GNSS and radio. These systems utilize computer vision and machine learning to enable unmanned aerial vehicles (UAVs) to operate independently. The company partners with UAV manufacturers to provide cost-effective solutions for public sector and defense clients. Their expertise lies in aerospace engineering, defense technology, and autonomous systems. The offered solutions are designed for robust flight control in GNSS-denied environments, realistic simulation environments for UAV operations, and intuitive user interfaces for drone control and mission planning.
- Jun 2025Seed$6.4M
#3
Series A · Tallinn, Harju County · founded 2020 · 23 employees$4.1Mraised▾
Provider of an intelligence management platform for data collection and analysis. The platform integrates external and internal data sources, creating a data repository. It structures data according to intelligence requirements, enabling users to filter relevant information. The system offers reporting and dissemination capabilities, including report generation and exporting. User access and control features provide secure access and transparency.
- Jun 2024Series A$4.1M
- Feb 2024Seed—
- 2020Seed—
#4
Seed · Tallinn, Harju County · founded 2013 · 7 employees$2.6Mraised▾
Provider of smart power line inspection solutions. It provides end-to-end inspection solution for large networks from smart software and rich analytics to hands-on support from specialists and hardware facilitation. It offers features such as AI-driven defect detection, overview of the state of your grid, and more.
- Feb 2024Seed—
- Feb 2021Seed$2.4M
- Jul 2020Seed$159.4K
- Jun 2019Grant (prize money)$470.3K
#5
Funding Raised · Tallinn, Harju County · founded 2015 · 37 employees$1.5Mraised▾
CAFA TECHNOLOGY develops flight planning software for drones. Its features include automatic takeoff and landing platform; it provides CAFA operation maps for geotagged photos and information; it provides real-time video and video recording; allows flight control by mission-based or manual; it provides datalink and control over 4G/LTE; it provides security VPN for telemetry and imagery. Its use cases are in the areas of search and rescue (SAR) operations, security & surveillance, and routinely patrols for police.
- Dec 2021Grant (prize money)$419.8K
- Jan 2021Grant (prize money)$294.9K
- Jun 2019Grant (prize money)$833.7K
#6
Deadpooled · Tallinn, Harju County · founded 2017$3Mraised▾
SKYFchain is blockchain based B2R(business-to-robots) operating platform for cargo robotics industry. Offers a database of unmanned cargo vehicles and drones, their operations and compliance documents. Offers individuals, banks, leasing and insurance companies comprehensive data to mitigate risks of financing the unmanned cargo delivery industry. Offers SKYFT token which is the internal currency of the operating system. Offers a referral program where users can receive bonus tokens amounting to 5% of the number of tokens referrals purchase.
- May 2018Series A$3M
#7
Funding Raised · Tallinn, Harju County · founded 2018$743.7Kraised▾
Provider of AI-based border and coastal security systems. It offers integrated autonomous situational awareness systems, and remote surveillance platforms. Its product portfolio includes AI-based software for threat detection, a mobile autonomous surveillance platform, and unmanned aerial surveillance and inspection systems. These are hardware agnostic and can be used in various landscapes, terrains, and weather conditions. It provides solutions for land and coastal border security, law enforcement, force protection, and environmental monitoring applications.
- Dec 2021Grant (prize money)$194.7K
- Dec 2020Grant (prize money)$549K
#8
Seed · Tallinn, Harju County · founded 2006 · 16 employees$1.6Mraised▾
Defendec develops surveillance technology for border and remote areas. Its main product is Smartdec has small, wireless, and easily camouflaged detectors that are equipped with an HD camera and long-lasting batteries. It is used for perimeter intrusion detection in border areas. It also has a similar product ReconEyez for industrial applications. Its patented low power wireless network technology, which is the backbone of the security product, is licensed other industries.
- Oct 2012Seed$1.6M
- 2009Seed—
#9
Funding Raised · Tallinn, Harju County · founded 2016 · 18 employees$183.9Kraised▾
Developer of electro-optical systems for drone. It includes radars, RF detectors, audio detectors, jammers lasers, and Remote Weapon Stations (RWS).
- Dec 2021Grant (prize money)$183.9K
#10
Seed · Tallinn, Harju County · founded 2017$337.6Kraised▾
Hepta provides aerial inspection and surveying services. It offers aerial inspection, surveying, and monitoring of industrial infrastructure including power transmission lines, electricity infrastructure, transformers, solar & wind energy infrastructure, and others using proprietary unmanned aerial vehicles and manned aerial vehicles.
- Jun 2019Seed$337.6K
#11
Seed · Tallinn, Harju County · founded 2017 · 22 employees$240.2Kraised▾
Provider of a yacht booking solution. It provides solutions to enterprises facing difficulty in yacht rentals. It provides a database of yachts that are available for booking with detailed search engine systems and secure payment options. It also provides a mobile application for yacht rentals. It can be used for managing boat rental, gulet rental, sailing boat rental, trimaran rental, renting a motor yacht, and catamaran rental.
- Angel$240.2K
#12
Funding Raised · Viimsi, Harju County · founded 2012 · 32 employees$110.6Kraised▾
Threod Systems develops unmanned aerial vehicles and ground systems for commercial and military purposes. Its drones include the fixed-wing long endurance drones, namely Theia, Stream and EoS Mini. Its ground systems include a basic flight control hardware module and ground control software. It also provides drone pilot training courses, and offers consulting for integrating drones into commercial and/or military workflows.
- Sep 2019Grant (prize money)$54.6K
- Jun 2019Grant (prize money)$56K
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Aerospace, Maritime and Defense Tech coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
How research on Launch Vehicles is moving in Estonia
A read on the academic research around Launch Vehicles — which themes are gaining ground, the institutions and researchers driving them, and how the tone is shifting. Based on 0 Estonia-affiliated papers.
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Common questions
Riya reads income statements for fun. She covers the real money in a sector — revenue, growth, who actually earns — and never met a vague claim she didn't want a number for.